EP0939168B1 - Method for restoring retaining walls - Google Patents

Method for restoring retaining walls Download PDF

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Publication number
EP0939168B1
EP0939168B1 EP99102574A EP99102574A EP0939168B1 EP 0939168 B1 EP0939168 B1 EP 0939168B1 EP 99102574 A EP99102574 A EP 99102574A EP 99102574 A EP99102574 A EP 99102574A EP 0939168 B1 EP0939168 B1 EP 0939168B1
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EP
European Patent Office
Prior art keywords
retaining wall
precast slab
concrete
precast
anchor
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Expired - Lifetime
Application number
EP99102574A
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German (de)
French (fr)
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EP0939168A2 (en
EP0939168A3 (en
Inventor
Kurt G. Ross
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Bau-Sanierungstechnik GmbH
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D37/00—Repair of damaged foundations or foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0007—Production methods using a mold
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0018—Cement used as binder
    • E02D2300/002—Concrete

Definitions

  • the concrete filling resembles unevenness, external damage and deformations or displacements that have already occurred the retaining wall, so that no renovation measures the retaining walls themselves are required.
  • the earth pressure acting on the retaining wall to be renovated transmitted through the ground anchors into the grown soil, so that no increased foundation effort for the transfer of Vertical forces on the foundation pillars are required.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Retaining Walls (AREA)
  • Piles And Underground Anchors (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

In the space in front of the support wall (1) a ready-made plate (6) is placed on foundation piles (5). The gap (10) between the support wall and the ready made plate is filled with concrete (11). The earth anchor (12) is fitted through holes in the ready-made plate and through the support wall and tightened against the ready-made plate.

Description

Die Erfindung betrifft ein Verfahren zur Sanierung von Stützmauern mittels Erdankern, die durch die Stützmauer in den dahinter anstehenden gewachsenen Boden und ggf. als Felsanker bis in dahinter liegenden Fels getrieben und verankert werden.The invention relates to a method for the remediation of Retaining walls by means of ground anchors, which pass through the retaining wall the growing soil behind it and possibly as Rock anchors driven into the rock behind and be anchored.

Aus JP-A-09 268576 ist ein Verfahren zur Erneuerung von beschädigten Wandflächen bekannt, bei dem neue Wandplatten über Abstandshalter mit der alten Wandfläche verbunden werden. Die neuen Wandplatten werden als Fertigteilplatten auf Gründungspfeiler gesetzt und durch Anker über die Abstandshalter mit der alten Wandfläche verspannt werden. Anschließend kann der Spalt zwischen den Fertigteilplatten und der alten Wandfläche mit Beton vergossen werden. Die neuen Wandplatten dienen einer Verblendung und optischen Verschönerung der alten Wandfläche.JP-A-09 268576 describes a process for the renewal of Damaged wall surfaces known for the new wall panels Connected to the old wall surface using spacers become. The new wall panels are called precast panels placed on foundation piers and anchored over the Spacers can be braced with the old wall surface. Then the gap between the precast panels and the old wall surface can be poured with concrete. The new wall panels serve a veneer and optical beautification of the old wall surface.

Die Sicherung von neu errichteten oder älteren Stützmauern durch Erdanker bzw. Felsanker ist bekannt. Die Anwendung dieses Verfahrens setzt voraus, daß die auftretenden Ankerkräfte in die Stützmauer eingeleitet und dort aufgenommen werden können. Eine derartige Verankerung einer älteren Stützmauer ist beispielsweise aus US-A-4,728,225 bekannt. Eine aus Stützpfeilern und zwischen den einzelnen Stützpfeilern angeordneten Platten bestehende Stützmauer wird dadurch verstärkt, dass Erdanker in das dahinter liegende Erdreich eingebracht und mit den Stützpfeilern befestigt und verspannt werden. Dabei werden die Stützpfeiler stärker mit dem dahinter liegenden Erdreich verbunden.Securing newly erected or older retaining walls through ground anchors or rock anchors is known. The application this procedure presupposes that the occurring Anchor forces are introduced into the retaining wall and absorbed there can be. Such anchoring of an older one Retaining wall is known for example from US-A-4,728,225. One made of pillars and between the individual pillars arranged slabs existing retaining wall is thereby reinforced that ground anchors in the ground behind brought in and fastened and braced with the support pillars become. The pillars become stronger with it connected to the ground behind it.

Wenn eine zu sanierende Stützmauer noch einen ausreichenden Verbund aufweist und beispielsweise nur hinsichtlich ihrer Standsicherheit gefährdet ist, reicht es in den meisten Fällen aus, die Ankerkräfte über Lastverteilungsplatten an der Vorderseite der Stützmauer einzuleiten. Wenn die Stützmauer jedoch keinen ausreichenden Verbund mehr aufweist, reicht eine örtlich begrenzte Krafteinleitung aus den Ankern in die Stützmauer nicht aus. Deshalb ist ein bekanntes Verfahren entwickelt worden (EP 0 290 941 B1), bei dem hinter der Stützmauer im Bereich der einzubringenden Erdanker Hohlräume ausgespült und mit Zementmaterial gefüllt werden, das einen die Ankerkraft aufnehmenden Lastverteilungskopf an der Rückseite der Stützmauer bildet. Auf diese Weise wird die Stützmauer vom Erddruck entlastet. Der hierfür erforderliche Arbeitsaufwand ist jedoch verhältnismäßig hoch. Das bekannte Verfahren ist außerdem nicht ausreichend, wenn der Verbund der zu sanierenden Stützmauer zumindest in einzelnen Bereichen kaum noch gegeben ist und/oder wesentliche Sanierungsmaßnahmen auch an der Mauervorderseite erforderlich sind, beispielsweise bei Betonstützmauern, bei denen die Sichtseite durch fehlende Bindemittel absandet, abfällt und freiliegt.If a retaining wall to be renovated is still sufficient Composite and, for example, only with regard to their Stability is at risk, in most it is enough Cases, the anchor forces on load distribution plates the front of the retaining wall. If the Retaining wall, however, no longer has a sufficient bond, a localized application of force from the anchors is sufficient into the retaining wall. That is why it is known Process has been developed (EP 0 290 941 B1), in which behind the retaining wall in the area of the ground anchors to be inserted Cavities are flushed out and filled with cement material, one on the load distribution head receiving the anchor force the back of the retaining wall forms. In this way the Retaining wall relieved of earth pressure. The one required for this However, workload is relatively high. The known Procedure is also not sufficient if the composite the retaining wall to be renovated, at least in some cases Areas are hardly given and / or essential Refurbishment measures also required on the front of the wall are, for example in concrete retaining walls, where the The visible side is sanded, falling and missing exposed.

Aufgabe der Erfindung ist es daher, ein Verfahren der eingangs genannten Gattung so auszubilden, daß mit verhältnismäßig geringem Arbeitsaufwand eine vollständige Sanierung auch von stark geschädigten Stützmauern ermöglicht wird.The object of the invention is therefore a method of train the type mentioned in such a way that with relative a complete renovation also made possible by heavily damaged retaining walls.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß im Abstand vor der Stützmauer jeweils eine Fertigteilplatte auf Gründungspfeiler gesetzt wird, daß der Spalt zwischen der Stützmauer und der Fertigteilplatte mit Beton vergossen wird und daß die Erdanker durch Ankerlöcher der Fertigteilplatte und durch die Stützmauer hindurch eingebracht und gegen die Fertigteilplatte verspannt werden.This object is achieved in that in A precast slab in front of the retaining wall Foundation pillar is set that the gap between the Retaining wall and the precast slab is poured with concrete and that the ground anchors through anchor holes in the precast slab and inserted through the retaining wall and against the Precast panel to be clamped.

Die vor die zu sanierende Stützmauer gesetzten Fertigteilplatten und der Ausgleichsbeton nehmen die Ankerkräfte aus den Erdankern auf und leiten diese Kräfte gleichmäßig verteilt in die Stützmauer und den dahinterstehenden Beton ein. Die Betonfüllung gleicht Unebenheiten, äußere Schadstellen und bereits eingetretene Verformungen bzw. Verlagerungen der Stützmauer aus, so daß keinerlei Sanierungsmaßnahmen an den Stützmauern selbst erforderlich sind.The prefabricated panels placed in front of the retaining wall to be renovated and the leveling concrete take away the anchor forces the ground anchors and conduct these forces evenly distributed in the retaining wall and the concrete behind it on. The concrete filling resembles unevenness, external damage and deformations or displacements that have already occurred the retaining wall, so that no renovation measures the retaining walls themselves are required.

Da die Gründungspfeiler im wesentlichen nur das Gewicht der vorgesetzten Fertigteilplatten sowie des Ausgleichsbetons aufnehmen, reichen wenige, statisch schmal dimensionierte Gründungspfeiler aus, die in einfacher Weise in Bohrlöcher eingesetzt oder in diesen errichtet werden können.Since the foundation pillars essentially only the weight of the prefabricated precast slabs and the leveling concrete few, statically narrow dimensions are sufficient Foundation pillars made in simple ways in boreholes can be used or built in these.

Der auf die zu sanierende Stützmauer wirkende Erddruck wird durch die Erdanker in den gewachsenen Boden übertragen, so daß kein erhöhter Fundierungsaufwand zur Übertragung von Vertikalkräften an den Gründungspfeilern erforderlich ist.The earth pressure acting on the retaining wall to be renovated transmitted through the ground anchors into the grown soil, so that no increased foundation effort for the transfer of Vertical forces on the foundation pillars are required.

Vorzugsweise sind benachbarte Fertigteilplatten schubfest miteinander verbunden, um Schnittkräfte zwischen benachbarten Wandabschnitten zu übertragen.Adjacent prefabricated panels are preferably shear-resistant connected together to create cutting forces between adjacent ones Transfer wall sections.

Die Herstellung der Gründungspfeiler, die wie axial beanspruchte Pfähle zur Lastabtragung dimensioniert werden, ist verhältnismäßig einfach, da das aufzunehmende Gewicht gering ist und die in frostfreier Tiefe meist schon beträchtliche Bodenfestigkeit nur geringe Abmessungen der Gründungspfeiler erfordert. Beispielsweise können die Gründungspfeiler als Fertigteile aus Beton oder Stahl dynamisch eingetrieben werden. Gründungspfeiler aus Ortbeton können leicht in Bohrlöcher eingesetzt werden, die wegen der Kapillarkohäsion vorübergehend standfähig sind. Auch Kombinationsbauweisen kommen dafür in Frage, zum Beispiel mit einem schrittweise durch Verdrängen aufgeweiteten und wiederholt mit Trockenmörtel verfüllten Bohrloch unter Verwendung eines pneumatischen Hammers.The manufacture of the foundation pillars that like axial stressed piles are dimensioned for load transfer, is relatively easy because of the weight to be absorbed is low and mostly in the frost-free depth considerable soil strength only small dimensions of the Foundation pillar required. For example, the Foundation pillars as prefabricated parts made of concrete or steel be driven dynamically. Foundation pillar made of in-situ concrete can easily be inserted into boreholes, which because of the Capillary cohesion are temporarily stable. Also Combination designs are possible, for example with a gradually widened by displacement and Drill hole repeatedly filled with dry mortar Use of a pneumatic hammer.

Nach dem Aufstellen werden die Fertigteilplatten vorübergehend abgestützt, bis der Beton in die ggf. bewehrte Fuge zwischen der Fertigteilplatte und der Stützmauer eingefüllt und ausreichend ausgehärtet ist. Dies kann durch eine herkömmliche Abstützung an der Plattenaußenseite geschehen. Stattdessen ist es in weiterer Ausgestaltung des Erfindungsgedankens auch möglich, die Fertigteilplatten mittels Anschlußteilen, vorzugsweise Dübeln, mit der Stützmauer provisorisch zu verbinden, bevor die Fuge mit Beton vergossen wird. Damit werden zusätzliche Abstützmaßnahmen überflüssig.After installation, the precast panels become temporary supported until the concrete in the possibly reinforced joint filled between the precast slab and the retaining wall and is sufficiently hardened. This can be done through a conventional support on the outside of the plate. Instead, it is a further embodiment of the inventive concept also possible using the precast panels Connection parts, preferably dowels, with the retaining wall to connect provisionally before grouting the joint with concrete becomes. This eliminates the need for additional support measures.

Die Fertigteilplatte und/oder der Ausgleichsbeton kann mit einer Bewehrung versehen werden. Insbesondere ist es vorteilhaft, die Fertigteilplatte bei ihrer Herstellung mit gelochten Ankerköpfen zu versehen, durch die die Erdanker eingebracht werden. Diese Ankerköpfe dienen der Einleitung der Ankerkräfte in die üblicherweise verhältnismäßig dünnen Fertigteilplatten.The precast slab and / or the leveling concrete can also be used a reinforcement. In particular it is advantageous to use the precast plate in their manufacture to provide perforated anchor heads through which the ground anchors be introduced. These anchor heads are used for introduction the anchor forces in the usually relatively thin Prefabricated panels.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung näher erläutert, das in der Zeichnung dargestellt ist.An exemplary embodiment of the invention is described in more detail below explained, which is shown in the drawing.

Die Zeichnung zeigt in einem senkrechten Schnitt eine zu sanierende Stützmauer 1, beim dargestellten Ausführungsbeispiel eine Betonmauer mit einem Winkelfundament 2.The drawing shows one in a vertical section renovating retaining wall 1, in the illustrated embodiment a concrete wall with an angular foundation 2.

In geringem Abstand vor der Stützmauer 1 werden Gründungspfeiler 5 in Bohrlöcher 3 im Boden 4 eingesetzt, die bis in frostfreie Tiefen reichen. Beispielsweise handelt es sich um vorgefertigte Gründungspfeiler aus Beton oder Stahl. Soweit erforderlich, werden die Gründungspfeiler 5 mit Pfeilerköpfen 5a aus Beton, Stahl oder mit einer Anschlußbewehrung, versehen.At a short distance from the retaining wall 1 are foundation pillars 5 used in boreholes 3 in the bottom 4, which up to frost-free depths are enough. For example, it is about prefabricated foundation pillars made of concrete or steel. So far required, the foundation pillars 5 with pillar heads 5a made of concrete, steel or with a connecting reinforcement, Mistake.

Vor der Montage der Fertigteilplatten 6 wird eine statische Bewehrung für die Ausgleichsbetonschicht an die Stützwand mittels Dübeln oder dgl. montiert. Danach werden auf die Gründungspfeiler 5 jeweils im Abstand vor der Vorderseite der Stützmauer 1 Fertigteilplatten 6 gesetzt. Hierbei handelt es sich beispielsweise um Beton-Halbfertigplatten, die mit einer Bewehrung 7 versehen sind. Die Fertigteilplatten 6 weisen gelochte Ankerköpfe 8 auf.Before the assembly of the precast panels 6, a static Reinforcement for the leveling concrete layer on the retaining wall mounted by means of dowels or the like. Then be on the Foundation pillars 5 each in front of the front Retaining wall 1 precast panels 6 set. This is what it is about are, for example, semi-finished concrete slabs that are Reinforcement 7 are provided. The precast panels 6 have perforated anchor heads 8.

Zur vorübergehenden Standsicherung der Fertigteilplatten 6 können diese mittels Anschlußteilen, beispielsweise Dübeln 9, mit der Stützmauer 1 verbunden werden. Stattdessen oder zusätzlich ist es auch möglich, die Fertigteilplatten 6 an ihrer Vorderseite abzustützen. Sodann wird der zwischen der Stützmauer 1 und den Fertigteilplatten 6 bestehende, ggf. bewehrte Spalt 10 mit einer aus Beton bestehenden Füllung vergossen.For temporary stability of the precast panels 6 can this by means of connecting parts, for example dowels 9, be connected to the retaining wall 1. Instead, or in addition, it is also possible to attach the precast panels 6 support their front. Then the one between the Retaining wall 1 and the prefabricated panels 6 existing, possibly reinforced gap 10 with a filling made of concrete shed.

Anschließend werden durch die Löcher der Ankerköpfe 8 der Fertigteilplatte 6 und durch die Stützmauer 1 Erdanker 12 in den hinter der Stützmauer 1 anstehenden gewachsenen Boden 13 eingebaut und in herkömmlicher Weise verankert. Hierzu können beispielsweise mittels eines Verdrängungshammers oder einer Bohrschnecke Bohrlöcher in den gewachsenen Boden 3 gebohrt werden. Anschließend werden Zugstäbe 14 in die Bohrlöcher eingesetzt und der Ringspalt wird zur Schubübertragung mittels Mörtel oder verdichtetem Granulat (Prinzip des Sandankers) gefüllt. Die Zugstäbe 14 der Erdanker 12 ragen durch die Ankerköpfe 8 der Fertigteilplatten 6 und werden gegen die Schubübertragungsstrecke im gewachsenen Boden mittels aufgeschraubter Ankermuttern 15 oder in ähnlicher Weise leicht angespannt.Then 8 through the holes of the anchor heads Precast 6 and through the retaining wall 1 ground anchor 12 in the growing soil 13 behind the retaining wall 1 installed and anchored in a conventional manner. You can do this for example using a displacement hammer or a Auger holes drilled in the grown soil 3 become. Then tie rods 14 are inserted into the boreholes used and the annular gap is used for thrust transmission using mortar or compacted granulate (principle of Sand anchor) filled. The tension rods 14 of the ground anchor 12 protrude through the anchor heads 8 of the prefabricated panels 6 and against the thrust transmission line in the grown soil by means of screwed-on anchor nuts 15 or similar Way slightly tense.

Die auftretende Vertikalkraft wird in die Gründungspfeiler 5 abgetragen, während die Horizontalkraft in die Erdanker 12 abgetragen wird. Dadurch ergibt sich ein geringer Materialund Arbeitsaufwand für die Sanierung der Stützmauer 1. Die Sanierung kann verhältnismäßig schnell durchgeführt werden und erfordert nur geringe Eingriffe in der Umgebung der zu sanierenden Stützmauer 1. Dadurch wird auch den Anforderungen des Umweltschutzes und Bodenschutzes besser Rechnung getragen als bei herkömmlichen Verfahren.The occurring vertical force is in the foundation pillar 5 removed while the horizontal force in the ground anchor 12 is removed. This results in a low material and Workload for the renovation of the retaining wall 1. The Refurbishment can be carried out relatively quickly and requires little intervention in the area surrounding the renovating retaining wall 1. This also meets the requirements environmental protection and soil protection better taken into account than with conventional methods.

Claims (5)

  1. Method for restoring retaining walls by means of earth anchors which are driven through the retaining wall (1) into the natural soil (4) standing behind and, if used as rock anchors, into rock situated behind, and anchored therein, characterized in that a precast slab (6) is in each case placed onto foundation piles (5) at a distance in front of the retaining wall (1), in that concrete (11) is poured into the gap (10) between the retaining wall (1) and the precast slab (6), and in that the earth anchors (12) are introduced through anchor holes in the precast slab (6) and through the retaining wall (1) and braced against the precast slab (6).
  2. Method according to Claim 1, characterized in that adjacent precast slabs (6) are connected to one another in a shear-resistant manner.
  3. Method according to Claim 1, characterized in that the precast slab (6) is provisionally connected to the retaining wall (1) by means of connection parts, preferably dowels (9), before concrete (11) is poured into the gap (10).
  4. Method according to Claim 1, characterized in that the precast slab (6) and/or the blinding concrete are provided with a reinforcement (7).
  5. Method according to Claim 1, characterized in that during its production the precast slab (6) is provided with perforated anchor heads (8) through which the earth anchors (12) are introduced.
EP99102574A 1998-02-26 1999-02-11 Method for restoring retaining walls Expired - Lifetime EP0939168B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19808020A DE19808020C2 (en) 1998-02-26 1998-02-26 Procedure for the renovation of retaining walls
DE19808020 1998-02-26

Publications (3)

Publication Number Publication Date
EP0939168A2 EP0939168A2 (en) 1999-09-01
EP0939168A3 EP0939168A3 (en) 1999-12-08
EP0939168B1 true EP0939168B1 (en) 2004-11-17

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ID=7858937

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EP99102574A Expired - Lifetime EP0939168B1 (en) 1998-02-26 1999-02-11 Method for restoring retaining walls

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EP (1) EP0939168B1 (en)
AT (1) ATE282739T1 (en)
DE (2) DE19808020C2 (en)
ES (1) ES2234175T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2108744A1 (en) 2008-04-11 2009-10-14 Bau-Sanierungstechnik GmbH Method for reinforcing supporting walls
CN108166492A (en) * 2018-01-30 2018-06-15 青岛市市政工程设计研究院有限责任公司 A kind of multi-functional high corrosion resistant anchor head system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2861107B1 (en) * 2003-10-16 2006-02-17 Spie Batignolles METHOD AND DEVICE FOR REPLACING A FACING ELEMENT IN A REINFORCED GROUND WORK
DE102005013994B4 (en) * 2005-03-26 2007-01-25 Bauer Spezialtiefbau Gmbh Device for the concentrated introduction of force into unreinforced diaphragm walls in the ground
DE102006018692A1 (en) * 2006-04-21 2007-10-25 Ross, Kurt G., Dipl.-Ing. Method for securing retaining walls
CN105951874B (en) * 2016-06-24 2017-10-10 山西省交通规划勘察设计院 A kind of retaining wall reinforcement structure and its construction method

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Publication number Priority date Publication date Assignee Title
GR78036B (en) * 1981-07-10 1984-09-26 Henri Vidal
US4728225A (en) * 1985-02-11 1988-03-01 Schnabel Foundation Company Method of rehabilitating a waterfront bulkhead
DE3716100A1 (en) 1987-05-14 1988-12-01 Ross Kurt G METHOD FOR SECURING SUPPORT WALLS
FR2641295B1 (en) * 1989-01-03 1991-12-13 Flourens Bruno METHOD AND DEVICE FOR ANCHORING THE SUPPORT SCALES OF AN ARMORED WALL
EP0390941B1 (en) * 1989-04-01 1993-02-03 FAG KUGELFISCHER GEORG SCHÄFER Kommanditgesellschaft auf Aktien Probe for sampling hazardous gases from ducts, particularly smoke ducts
DE4321730C2 (en) * 1993-06-30 1998-07-02 Bilfinger Berger Bau Combination waterproofing for landfills with steep walls to vertical walls and / or embankments as landfill restrictions
JP2945629B2 (en) * 1996-01-29 1999-09-06 新興工材株式会社 Reform foam on existing wall surfaces and relocation wall material attachment position
DE19605189C2 (en) * 1996-02-13 2002-04-04 Univ Dresden Tech Procedure for the renovation of retaining walls

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2108744A1 (en) 2008-04-11 2009-10-14 Bau-Sanierungstechnik GmbH Method for reinforcing supporting walls
DE102008018382A1 (en) 2008-04-11 2009-10-15 Bau-Sanierungstechnik Gmbh Method for securing retaining walls
CN108166492A (en) * 2018-01-30 2018-06-15 青岛市市政工程设计研究院有限责任公司 A kind of multi-functional high corrosion resistant anchor head system
CN108166492B (en) * 2018-01-30 2019-03-05 青岛市市政工程设计研究院有限责任公司 A kind of multi-functional high corrosion resistant anchor head system

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Publication number Publication date
DE19808020C2 (en) 2000-09-21
ES2234175T3 (en) 2005-06-16
ATE282739T1 (en) 2004-12-15
EP0939168A2 (en) 1999-09-01
EP0939168A3 (en) 1999-12-08
DE59911064D1 (en) 2004-12-23
DE19808020A1 (en) 1999-09-16

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